Major Vacuum slurry tankers: Standard service schedule

1. Look at the sight glasses to confirm oil is circulating and the reservoir is above the minimum mark.
2. Top up with new oil only.
3. With the pump running, watch the drip feed and adjust it to about one drop every three seconds.

Tools: Funnel, Clean oil can, Rag

1. With the pump on the pressure setting, suck about 1 litre of diesel in through the air intake.
2. Then suck in a small amount of reservoir oil to lubricate the pump.
3. If the tanker will stand unused for a long time, remove the hose between the pump and the tank so gas does not reach the pump and rust it.

Tools: Clean container for the diesel

1. Open the drain valve under the air tank until no water comes out, then close it.

1. Grease the swivel hitch.
2. Check the hitch eye for wear.

Tools: Grease gun

1. Disconnect the PTO and park on level ground.
2. Put the tray under the gearbox, remove the drain plug and let it drain.
3. Refit the drain plug and fill through the filler plug at the top until the oil is up to the top of the see-through level plug.
4. Refit the filler plug. Dispose of the old oil properly.

Tools: Drain tray (5 L), Spanners, Funnel, Rag

1. Tighten the wheel nuts in sequence to the torque for your model.
2. Check the hub end float is 0.05–0.15 mm. If it is not, spin the wheel, tighten the adjusting nut until you feel resistance, back it off two to three flats, fit the lock washer and tighten the lock nut to 373 N·m.
3. Check the tyre pressures when cold.

Tools: Torque wrench (to 600 N·m), Wheel brace

1. Pull the PTO shaft apart, clean the profiles and grease them.
2. Grease the universal joints and guard bearings.
3. Brush lubricating oil onto the shaft.

Tools: Grease gun, Brush, Oil can

1. Grease every axle grease point and the slack adjusters.
2. Do not grease at high pressure into the hubs; it can damage the seals.
3. Check the brake linings for wear and the cam shafts for sticking.

Tools: Grease gun

1. Remove the cut-out valve and inspect the balls.
2. Replace the small ball, and any ball that is soft or spongy.
3. Check the relief valves open at their set points: vacuum −0.80 bar and pressure 1 bar.

Tools: Spanners, Rag

1. Wash the outside and flush the tanker with clean water.
2. Flush the pump with diesel, then oil only.
3. Remove the pump-to-tank hose. Grease all grease points.
4. Leave the tank hatch open to ventilate. Do not enter a slurry tank without a proper confined-space procedure.

Tools: Pressure washer

1. Jack under the axle close to the wheel and support the tanker on stands.
2. Remove the wheel and hub. Check the brake linings are above the wear line, and the anchor pins and cam rollers move freely.
3. Wash the bearings, never spin them dry, and check for pitting, corrosion or flaking.
4. Repack with fresh EP2 grease without overfilling and fit new seals.
5. Set the end float to 0.05–0.15 mm and lock nut to 373 N·m.

Tools: Axle stands, Torque wrench, Bearing puller, Cleaning tank